@media only screen and (max-width:850px) {
 
    nav div#logo{
        margin-left: 25px;
    }

    nav label {
        display: block;
    }

    input#checkbox:checked ~ ul.collapsed {
        right: -20px;
    }

    ul.collapsed {
        display:flex;
        flex-direction: column;
        align-items: center;
        width: 100vw;
        height: 100vh;
        position: fixed;
        top: 50px;
        right: -5000px;
        line-height: 20px;
        transition: ease-in-out .2s;
        z-index: 1;
        background-color: rgb(43, 43, 43);
    }

    nav ul li {
        margin: 40px 0 0 0;
        font-size: 1.5rem;
    }
    nav ul a {
        margin: 20px;
        color: white;
        font-weight: bold;
        text-decoration: none;
        font-size: 1em;
    }

    nav a:before {
        height: 3px;
        inset: 20px 0 0 0;
    }

    div#smart-cards div#img-iphone{
        display: none;
    }
}

@media only screen and (max-width:1407px){
    div#smart-cards div#img-iphone{
        display: none;
    }

   
}

@media only screen and (max-width:765px){
    main section#smartphone div#smart-cards{
        flex-wrap: wrap;
    }
}

@media only screen and (max-width:502px){
    div.accusan-timar{
        margin-left: 0;
        margin-right: 0;
    }
}

@media only screen and (max-width:1299px){
    div.form-name, div.form-email{
        max-width: 100%;
        padding-left: 0;
        padding-right: 0;
    }
}

@media only screen and (max-width:773px){
    div#lets-conteudo{
        flex-wrap: wrap;
    }

    div#lets-texto{
        text-align: center;
        max-width:100%;
    }
}

@media only screen and (max-width:318px){
    nav div#logo small{display:none}
}